Portable battery charger



FIG. 1 is a front perspective view of the portable battery charger according to the invention;

FIG. 2 is a left side view of the portable battery charger as shown in FIG. 1.

FIG. 3 is a right side view of the portable battery charger as shown in FIG. 1 shown from the opposite side as that shown in FIG. 2;

FIG. 4 is a front view of the portable battery charger as shown in FIG. 1;

FIG. 5 is a rear view of the portable battery charger as shown in FIG. 1; and

FIG. 6 is an enlarged top view of the portable battery charger as shown in FIG. 1; and,

FIG. 7 is an enlarged bottom view of the portable battery charger as shown in FIG. 1.

The broken lines in the drawings are for the purpose of illustrating unclaimed portions of the portable battery charger and form no part of the claimed design. 

CLAIM The ornamental design for a portable battery charger, as shown and described. 